You’ll never miss the meat with this portobello veggie sandwich!
Thick, herbed portabella mushrooms are sautéed with onions and bell peppers and covered in sharp white cheddar cheese and garlic mayo.
Portobello mushroom sandwiches are a delicious meatless sandwich recipe you’ll want to keep nearby for those meatless Mondays and nights where you want something comforting yet healthy for dinner. Packed with several different types of veggies in every portobello veggie burger I think it’s safe to assume that these sandwiches are far better for you than most. And they’re incredibly easy to create as well which is just one more reason to love them!
The BEST Portobello Mushroom Sandwich
This portobello mushroom sandwich was actually inspired by another sandwich I tried while on vacation and after putting my own spin on it I think it’s truly the best sandwich ever created. Made with soft portobello mushrooms, onions, roasted red peppers garlic, and cheese, every bite is a savory meatless bite of heaven. I love how simple and easy this sandwich is to make while keeping a high-class taste in every juicy bite.
Ingredients
- Olive Oil
- Portobello Mushroom
- Dried Rosemary
- Balsamic Vinegar
- Onion
- Roasted Red Peppers
- White Cheddar Cheese
- Mayonnaise
- Garlic Cloves
- Salt
- Black Pepper
- Soft Bakery-Style Hamburger Buns
For the exact amounts needed, please see the recipe card below.
How to Make Portobello Veggie Burger
- Heat your olive oil in a large skillet over medium heat.
- Add in the mushrooms, rosemary, and vinegar.
- Cook until the mushrooms are softened. this should take about 8-10 minutes. Remove the mushrooms and then set them aside.
- Add another teaspoon of olive oil to the pan and then add in the onion. Heat until caramel in color (about 10-15 minutes).
- When your onions have been cooking for about 10 minutes add in the roasted red peppers and continue to cook until heated through.
- Spray a grill pan with nonstick cooking spray and place over medium-low heat.
- Add in the mushrooms and arrange them into two piles.
- Top each pile with the onion mixture and 2 ounces of cheese.
- Place a deep skillet over the other piles and allow the cheese to melt.
- Meanwhile, toast your buts.
- In a small bowl, combine the mayo, garlic, and salt. Place about 1/2 tablespoon of the mayo mixture onto each half of the burger buns.
- Use a spatula to carefully live up the mushroom mixture and place it onto the bottom buns.
- Repeat the process with the other sandwiches. Mushrooms, onions, and mayo, dividing between 4 buns.
- With the top sandwich bun, place the cheese, and then place it onto a baking sheet before entering the oven to broil for about a minute or until the cheese has melted.
- Serve immediately and enjoy!
FAQs
Are portobello veggie sandwiches vegan?
No these sandwiches are not vegan because we use cheese and mayo. You can simply make vegan0friendly substitutions to get this vegetarian sandwich to become vegan.
Do you have to clean the gills out of a portobello mushroom?
This is a totally optional step and is up to you. While it’d make sense to remove them if we were going to stuff them there is no real reason to do so here. So leave them in or take them out, it’s totally up to you and your preferences!
Is there a difference between portobello and Portabella?
Besides the spelling, there is no actual difference. Both names are used to describe the same exact mushroom so use whichever version of the name you are most comfortable with.
If you loved these portobello mushroom sandwich recipes then you’ll love these other great mushroom recipes:
- Vegan Stuffed Portobello Mushrooms
- Caprese Chicken Portobello Mushrooms
- Portobello Mushroom Burgers
- Mushroom Vegan Pot Pie
- Easy Stuffed Mushrooms with Andouille
- Caprese Chicken Portobello Mushrooms
Portobello Veggie Sandwich
Ingredients
- 2 teaspoons Olive Oil, Divided
- 16 ounces Portobello Mushroom, Sliced
- 1 1/2 teaspoons Dried Rosemary
- 2 tablespoons Balsamic Vinegar
- 1 large Onion, Thinly sliced
- 1/2 cup Chopped Roasted Red Peppers
- 4 ounces White Cheddar Cheese
- 1/3 cup Mayonnaise
- 2 cloves Garlic, Minced
- 1/4 teaspoon Salt
- 1/2 teaspoon Black Pepper
- 4 Soft Bakery-Style Hamburger Buns
Instructions
- Heat olive oil in a large skillet over medium heat.
- Add mushrooms, rosemary and vinegar. Cook until mushrooms have softened, about 8-10 minutes. Remove mushrooms and set aside.
- Add another teaspoon of olive oil to the same skillet. Add onion to the pan. Heat onions until soft and caramel in color. This should take about 10-15 minutes.
- At the 10 minute mark, add your red peppers and continue to cook just until the mixture is heated through.
- Spray a grill pan with non-stick spray and heat on medium low. Add mushrooms, arranging them into two “piles”. (Reserve remaining mushrooms)
- Top each pile with onion mixture and 2 oz of cheese. Place a deep skillet cover over the piles and allow cheese to melt.
- Meanwhile toast your hamburger buns.
- In a small bowl, combine mayo, garlic and salt. Stir. Place about a 1/2 tablespoon of mayo mixture on each half of your bun.
- Using a spatula, carefully lift up mushroom mixture and place on the bottom of two buns.
- Repeat the process with remaining mushrooms, onions and mayo.
- If space allows, heat all your mushrooms at the same time. Alternatively, divide mushroom and onion mixture on the bottoms of 4 buns.
- Top each bun with cheese and broil in a preheated oven until cheese has melted.
Tori says
Omg, YES! I’ve actually never had a portabello burger but now I so want to make these!
Cindy diy beautify says
I love a hearty, meatless sandwich, this looks divine!
Lisa @ Fun Money Mom says
Yumm…this looks delicious! I love portobello mushrooms and this is my kind of sandwich! Thanks so much for sharing with us at Share The Wealth Sunday! Pinned xoxo
Amber MacDonald says
What a delicious sandwich! I’m with you! I don’t like to do dishes or cook on vacation. Or even if I’m having a “staycation!” Thanks so much for linking up with our Best of the Blogosphere link up. We’d love to have you back tomorrow!
sahana says
Sounds so good!!I am currently trying new versions of sandwiches.Will definitely try your recipe. Thank you for sharing with us at #HomeMattersParty. We would love to have you again next week.
Theresa @DearCreatives says
Looks so yummy! I want to make this for lunch or dinner soon. Pinned & shared.Thanks for sharing at the Inspiration Spotlight party!
Ashley says
Thanks for linking up to last week’s Tasty Tuesday linky. I have pinned your recipe and hope that you’ll join us again this week.
Frugal Hausfrau says
Now here’s a portebella sandwich I can get behind! Looks delish! Thanks for linking up to us on Throwback Thursday!
Mollie
Christine | Mid-Life Croissant says
Tanya this is such a dreamy sandwich! Drooling. Thanks for linking up at #SaucySaturdays.